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2014-01-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds6-32/+340
Pull crypto update from Herbert Xu: "Here is the crypto update for 3.14: - Improved crypto_memneq helper - Use cyprto_memneq in arch-specific crypto code - Replaced orphaned DCP driver with Freescale MXS DCP driver - Added AVX/AVX2 version of AESNI-GCM encode and decode - Added AMD Cryptographic Coprocessor (CCP) driver - Misc fixes" * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (41 commits) crypto: aesni - fix build on x86 (32bit) crypto: mxs - Fix sparse non static symbol warning crypto: ccp - CCP device enabled/disabled changes crypto: ccp - Cleanup hash invocation calls crypto: ccp - Change data length declarations to u64 crypto: ccp - Check for caller result area before using it crypto: ccp - Cleanup scatterlist usage crypto: ccp - Apply appropriate gfp_t type to memory allocations crypto: drivers - Sort drivers/crypto/Makefile ARM: mxs: dts: Enable DCP for MXS crypto: mxs - Add Freescale MXS DCP driver crypto: mxs - Remove the old DCP driver crypto: ahash - Fully restore ahash request before completing crypto: aesni - fix build on x86 (32bit) crypto: talitos - Remove redundant dev_set_drvdata crypto: ccp - Remove redundant dev_set_drvdata crypto: crypto4xx - Remove redundant dev_set_drvdata crypto: caam - simplify and harden key parsing crypto: omap-sham - Fix Polling mode for larger blocks crypto: tcrypt - Added speed tests for AEAD crypto alogrithms in tcrypt test suite ...
2014-01-05crypto: ahash - Fully restore ahash request before completingMarek Vasut1-1/+4
When finishing the ahash request, the ahash_op_unaligned_done() will call complete() on the request. Yet, this will not call the correct complete callback. The correct complete callback was previously stored in the requests' private data, as seen in ahash_op_unaligned(). This patch restores the correct complete callback and .data field of the request before calling complete() on it. Signed-off-by: Marek Vasut <marex@denx.de> Cc: David S. Miller <davem@davemloft.net> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-12-20crypto: tcrypt - Added speed tests for AEAD crypto alogrithms in tcrypt test ↵Tim Chen2-0/+280
suite Adding simple speed tests for a range of block sizes for AEAD crypto algorithms. Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-12-09crypto: memneq - fix for archs without efficient unaligned accessDaniel Borkmann1-1/+2
Commit fe8c8a126806 introduced a possible build error for archs that do not have CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS set. :/ Fix this up by bringing else braces outside of the ifdef. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Fixes: fe8c8a126806 ("crypto: more robust crypto_memneq") Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-By: Cesar Eduardo Barros <cesarb@cesarb.eti.br> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-12-05crypto: pcrypt - Fix wrong usage of rcu_dereference()Mathias Krause1-1/+1
A kernel with enabled lockdep complains about the wrong usage of rcu_dereference() under a rcu_read_lock_bh() protected region. =============================== [ INFO: suspicious RCU usage. ] 3.13.0-rc1+ #126 Not tainted ------------------------------- linux/crypto/pcrypt.c:81 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 1 1 lock held by cryptomgr_test/153: #0: (rcu_read_lock_bh){.+....}, at: [<ffffffff812c8075>] pcrypt_do_parallel.isra.2+0x5/0x200 Fix that by using rcu_dereference_bh() instead. Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: "David S. Miller" <davem@davemloft.net> Acked-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-12-05crypto: more robust crypto_memneqCesar Eduardo Barros2-30/+54
Disabling compiler optimizations can be fragile, since a new optimization could be added to -O0 or -Os that breaks the assumptions the code is making. Instead of disabling compiler optimizations, use a dummy inline assembly (based on RELOC_HIDE) to block the problematic kinds of optimization, while still allowing other optimizations to be applied to the code. The dummy inline assembly is added after every OR, and has the accumulator variable as its input and output. The compiler is forced to assume that the dummy inline assembly could both depend on the accumulator variable and change the accumulator variable, so it is forced to compute the value correctly before the inline assembly, and cannot assume anything about its value after the inline assembly. This change should be enough to make crypto_memneq work correctly (with data-independent timing) even if it is inlined at its call sites. That can be done later in a followup patch. Compile-tested on x86_64. Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.eti.br> Acked-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-12-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds4-18/+22
Pull crypto fixes from Herbert Xu: "This push fixes a number of crashes triggered by a previous crypto self-test update. It also fixes a build problem in the caam driver, as well as a concurrency issue in s390. Finally there is a pair of fixes to bugs in the crypto scatterwalk code and authenc that may lead to crashes" * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: testmgr - fix sglen in test_aead for case 'dst != src' crypto: talitos - fix aead sglen for case 'dst != src' crypto: caam - fix aead sglen for case 'dst != src' crypto: ccm - Fix handling of zero plaintext when computing mac crypto: s390 - Fix aes-xts parameter corruption crypto: talitos - corrrectly handle zero-length assoc data crypto: scatterwalk - Set the chain pointer indication bit crypto: authenc - Find proper IV address in ablkcipher callback crypto: caam - Add missing Job Ring include
2013-12-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2-0/+6
Pull networking updates from David Miller: "Here is a pile of bug fixes that accumulated while I was in Europe" 1) In fixing kernel leaks to userspace during copying of socket addresses, we broke a case that used to work, namely the user providing a buffer larger than the in-kernel generic socket address structure. This broke Ruby amongst other things. Fix from Dan Carpenter. 2) Fix regression added by byte queue limit support in 8139cp driver, from Yang Yingliang. 3) The addition of MSG_SENDPAGE_NOTLAST buggered up a few sendpage implementations, they should just treat it the same as MSG_MORE. Fix from Richard Weinberger and Shawn Landden. 4) Handle icmpv4 errors received on ipv6 SIT tunnels correctly, from Oussama Ghorbel. In particular we should send an ICMPv6 unreachable in such situations. 5) Fix some regressions in the recent genetlink fixes, in particular get the pmcraid driver to use the new safer interfaces correctly. From Johannes Berg. 6) macvtap was converted to use a per-cpu set of statistics, but some code was still bumping tx_dropped elsewhere. From Jason Wang. 7) Fix build failure of xen-netback due to missing include on some architectures, from Andy Whitecroft. 8) macvtap double counts received packets in statistics, fix from Vlad Yasevich. 9) Fix various cases of using *_STATS_BH() when *_STATS() is more appropriate. From Eric Dumazet and Hannes Frederic Sowa. 10) Pktgen ipsec mode doesn't update the ipv4 header length and checksum properly after encapsulation. Fix from Fan Du. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (61 commits) net/mlx4_en: Remove selftest TX queues empty condition {pktgen, xfrm} Update IPv4 header total len and checksum after tranformation virtio_net: make all RX paths handle erors consistently virtio_net: fix error handling for mergeable buffers virtio_net: Fixed a trivial typo (fitler --> filter) netem: fix gemodel loss generator netem: fix loss 4 state model netem: missing break in ge loss generator net/hsr: Support iproute print_opt ('ip -details ...') net/hsr: Very small fix of comment style. MAINTAINERS: Added net/hsr/ maintainer ipv6: fix possible seqlock deadlock in ip6_finish_output2 ixgbe: Make ixgbe_identify_qsfp_module_generic static ixgbe: turn NETIF_F_HW_L2FW_DOFFLOAD off by default ixgbe: ixgbe_fwd_ring_down needs to be static e1000: fix possible reset_task running after adapter down e1000: fix lockdep warning in e1000_reset_task e1000: prevent oops when adapter is being closed and reset simultaneously igb: Fixed Wake On LAN support inet: fix possible seqlock deadlocks ...
2013-11-29net: update consumers of MSG_MORE to recognize MSG_SENDPAGE_NOTLASTShawn Landden2-0/+6
Commit 35f9c09fe (tcp: tcp_sendpages() should call tcp_push() once) added an internal flag MSG_SENDPAGE_NOTLAST, similar to MSG_MORE. algif_hash, algif_skcipher, and udp used MSG_MORE from tcp_sendpages() and need to see the new flag as identical to MSG_MORE. This fixes sendfile() on AF_ALG. v3: also fix udp Cc: Tom Herbert <therbert@google.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: David S. Miller <davem@davemloft.net> Cc: <stable@vger.kernel.org> # 3.4.x + 3.2.x Reported-and-tested-by: Shawn Landden <shawnlandden@gmail.com> Original-patch: Richard Weinberger <richard@nod.at> Signed-off-by: Shawn Landden <shawn@churchofgit.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-28crypto: testmgr - fix sglen in test_aead for case 'dst != src'Horia Geanta1-14/+12
Commit d8a32ac25698cd60b02bed2100379803c7f964e3 (crypto: testmgr - make test_aead also test 'dst != src' code paths) added support for different source and destination buffers in test_aead. This patch modifies the source and destination buffer lengths accordingly: the lengths are not equal since encryption / decryption adds / removes the ICV. Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: Horia Geanta <horia.geanta@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-11-28crypto: caam - fix aead sglen for case 'dst != src'Horia Geanta1-0/+4
For aead case when source and destination buffers are different, there is an incorrect assumption that the source length includes the ICV length. Fix this, since it leads to an oops when using sg_count() to find the number of nents in the scatterlist: Unable to handle kernel paging request for data at address 0x00000004 Faulting instruction address: 0xf91f7634 Oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=8 P4080 DS Modules linked in: caamalg(+) caam_jr caam CPU: 1 PID: 1053 Comm: cryptomgr_test Not tainted 3.11.0 #16 task: eeb24ab0 ti: eeafa000 task.ti: eeafa000 NIP: f91f7634 LR: f91f7f24 CTR: f91f7ef0 REGS: eeafbbc0 TRAP: 0300 Not tainted (3.11.0) MSR: 00029002 <CE,EE,ME> CR: 44044044 XER: 00000000 DEAR: 00000004, ESR: 00000000 GPR00: f91f7f24 eeafbc70 eeb24ab0 00000002 ee8e0900 ee8e0800 00000024 c45c4462 GPR08: 00000010 00000000 00000014 0c0e4000 24044044 00000000 00000000 c0691590 GPR16: eeab0000 eeb23000 00000000 00000000 00000000 00000001 00000001 eeafbcc8 GPR24: 000000d1 00000010 ee2d5000 ee49ea10 ee49ea10 ee46f640 ee46f640 c0691590 NIP [f91f7634] aead_edesc_alloc.constprop.14+0x144/0x780 [caamalg] LR [f91f7f24] aead_encrypt+0x34/0x288 [caamalg] Call Trace: [eeafbc70] [a1004000] 0xa1004000 (unreliable) [eeafbcc0] [f91f7f24] aead_encrypt+0x34/0x288 [caamalg] [eeafbcf0] [c020d77c] __test_aead+0x3ec/0xe20 [eeafbe20] [c020f35c] test_aead+0x6c/0xe0 [eeafbe40] [c020f420] alg_test_aead+0x50/0xd0 [eeafbe60] [c020e5e4] alg_test+0x114/0x2e0 [eeafbee0] [c020bd1c] cryptomgr_test+0x4c/0x60 [eeafbef0] [c0047058] kthread+0xa8/0xb0 [eeafbf40] [c000eb0c] ret_from_kernel_thread+0x5c/0x64 Instruction dump: 69084321 7d080034 5508d97e 69080001 0f080000 81290024 552807fe 0f080000 3a600001 5529003a 2f8a0000 40dd0028 <80e90004> 3ab50001 8109000c 70e30002 ---[ end trace b3c3e23925c7484e ]--- While here, add a tcrypt mode for making it easy to test authenc (needed for triggering case above). Signed-off-by: Horia Geanta <horia.geanta@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-11-28crypto: ccm - Fix handling of zero plaintext when computing macHoria Geanta1-1/+2
There are cases when cryptlen can be zero in crypto_ccm_auth(): -encryptiom: input scatterlist length is zero (no plaintext) -decryption: input scatterlist contains only the mac plus the condition of having different source and destination buffers (or else scatterlist length = max(plaintext_len, ciphertext_len)). These are not handled correctly, leading to crashes like: root@p4080ds:~/crypto# insmod tcrypt.ko mode=45 ------------[ cut here ]------------ kernel BUG at crypto/scatterwalk.c:37! Oops: Exception in kernel mode, sig: 5 [#1] SMP NR_CPUS=8 P4080 DS Modules linked in: tcrypt(+) crc32c xts xcbc vmac pcbc ecb gcm ghash_generic gf128mul ccm ctr seqiv CPU: 3 PID: 1082 Comm: cryptomgr_test Not tainted 3.11.0 #14 task: ee12c5b0 ti: eecd0000 task.ti: eecd0000 NIP: c0204d98 LR: f9225848 CTR: c0204d80 REGS: eecd1b70 TRAP: 0700 Not tainted (3.11.0) MSR: 00029002 <CE,EE,ME> CR: 22044022 XER: 20000000 GPR00: f9225c94 eecd1c20 ee12c5b0 eecd1c28 ee879400 ee879400 00000000 ee607464 GPR08: 00000001 00000001 00000000 006b0000 c0204d80 00000000 00000002 c0698e20 GPR16: ee987000 ee895000 fffffff4 ee879500 00000100 eecd1d58 00000001 00000000 GPR24: ee879400 00000020 00000000 00000000 ee5b2800 ee607430 00000004 ee607460 NIP [c0204d98] scatterwalk_start+0x18/0x30 LR [f9225848] get_data_to_compute+0x28/0x2f0 [ccm] Call Trace: [eecd1c20] [f9225974] get_data_to_compute+0x154/0x2f0 [ccm] (unreliable) [eecd1c70] [f9225c94] crypto_ccm_auth+0x184/0x1d0 [ccm] [eecd1cb0] [f9225d40] crypto_ccm_encrypt+0x60/0x2d0 [ccm] [eecd1cf0] [c020d77c] __test_aead+0x3ec/0xe20 [eecd1e20] [c020f35c] test_aead+0x6c/0xe0 [eecd1e40] [c020f420] alg_test_aead+0x50/0xd0 [eecd1e60] [c020e5e4] alg_test+0x114/0x2e0 [eecd1ee0] [c020bd1c] cryptomgr_test+0x4c/0x60 [eecd1ef0] [c0047058] kthread+0xa8/0xb0 [eecd1f40] [c000eb0c] ret_from_kernel_thread+0x5c/0x64 Instruction dump: 0f080000 81290024 552807fe 0f080000 5529003a 4bffffb4 90830000 39400000 39000001 8124000c 2f890000 7d28579e <0f090000> 81240008 91230004 4e800020 ---[ end trace 6d652dfcd1be37bd ]--- Cc: <stable@vger.kernel.org> Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: Horia Geanta <horia.geanta@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-11-28crypto: authenc - Find proper IV address in ablkcipher callbackTom Lendacky1-3/+4
When performing an asynchronous ablkcipher operation the authenc completion callback routine is invoked, but it does not locate and use the proper IV. The callback routine, crypto_authenc_encrypt_done, is updated to use the same method of calculating the address of the IV as is done in crypto_authenc_encrypt function which sets up the callback. Cc: stable@vger.kernel.org Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-11-23Revert "KEYS: verify a certificate is signed by a 'trusted' key"Linus Torvalds1-80/+1
This reverts commit 09fbc47373826d67531380662b516de2da120545, which caused the following build errors: crypto/asymmetric_keys/x509_public_key.c: In function ‘x509_key_preparse’: crypto/asymmetric_keys/x509_public_key.c:237:35: error: ‘system_trusted_keyring’ undeclared (first use in this function) ret = x509_validate_trust(cert, system_trusted_keyring); ^ crypto/asymmetric_keys/x509_public_key.c:237:35: note: each undeclared identifier is reported only once for each function it appears in reported by Jim Davis. Mimi says: "I made the classic mistake of requesting this patch to be upstreamed at the last second, rather than waiting until the next open window. At this point, the best course would probably be to revert the two commits and fix them for the next open window" Reported-by: Jim Davis <jim.epost@gmail.com> Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds11-87/+356
Pull crypto update from Herbert Xu: - Made x86 ablk_helper generic for ARM - Phase out chainiv in favour of eseqiv (affects IPsec) - Fixed aes-cbc IV corruption on s390 - Added constant-time crypto_memneq which replaces memcmp - Fixed aes-ctr in omap-aes - Added OMAP3 ROM RNG support - Add PRNG support for MSM SoC's - Add and use Job Ring API in caam - Misc fixes [ NOTE! This pull request was sent within the merge window, but Herbert has some questionable email sending setup that makes him public enemy #1 as far as gmail is concerned. So most of his emails seem to be trapped by gmail as spam, resulting in me not seeing them. - Linus ] * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (49 commits) crypto: s390 - Fix aes-cbc IV corruption crypto: omap-aes - Fix CTR mode counter length crypto: omap-sham - Add missing modalias padata: make the sequence counter an atomic_t crypto: caam - Modify the interface layers to use JR API's crypto: caam - Add API's to allocate/free Job Rings crypto: caam - Add Platform driver for Job Ring hwrng: msm - Add PRNG support for MSM SoC's ARM: DT: msm: Add Qualcomm's PRNG driver binding document crypto: skcipher - Use eseqiv even on UP machines crypto: talitos - Simplify key parsing crypto: picoxcell - Simplify and harden key parsing crypto: ixp4xx - Simplify and harden key parsing crypto: authencesn - Simplify key parsing crypto: authenc - Export key parsing helper function crypto: mv_cesa: remove deprecated IRQF_DISABLED hwrng: OMAP3 ROM Random Number Generator support crypto: sha256_ssse3 - also test for BMI2 crypto: mv_cesa - Remove redundant of_match_ptr crypto: sahara - Remove redundant of_match_ptr ...
2013-11-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2-3/+0
Pull networking fixes from David Miller: 1) Fix memory leaks and other issues in mwifiex driver, from Amitkumar Karwar. 2) skb_segment() can choke on packets using frag lists, fix from Herbert Xu with help from Eric Dumazet and others. 3) IPv4 output cached route instantiation properly handles races involving two threads trying to install the same route, but we forgot to propagate this logic to input routes as well. Fix from Alexei Starovoitov. 4) Put protections in place to make sure that recvmsg() paths never accidently copy uninitialized memory back into userspace and also make sure that we never try to use more that sockaddr_storage for building the on-kernel-stack copy of a sockaddr. Fixes from Hannes Frederic Sowa. 5) R8152 driver transmit flow bug fixes from Hayes Wang. 6) Fix some minor fallouts from genetlink changes, from Johannes Berg and Michael Opdenacker. 7) AF_PACKET sendmsg path can race with netdevice unregister notifier, fix by using RCU to make sure the network device doesn't go away from under us. Fix from Daniel Borkmann. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits) gso: handle new frag_list of frags GRO packets genetlink: fix genl_set_err() group ID genetlink: fix genlmsg_multicast() bug packet: fix use after free race in send path when dev is released xen-netback: stop the VIF thread before unbinding IRQs wimax: remove dead code net/phy: Add the autocross feature for forced links on VSC82x4 net/phy: Add VSC8662 support net/phy: Add VSC8574 support net/phy: Add VSC8234 support net: add BUG_ON if kernel advertises msg_namelen > sizeof(struct sockaddr_storage) net: rework recvmsg handler msg_name and msg_namelen logic bridge: flush br's address entry in fdb when remove the net: core: Always propagate flag changes to interfaces ipv4: fix race in concurrent ip_route_input_slow() r8152: fix incorrect type in assignment r8152: support stopping/waking tx queue r8152: modify the tx flow r8152: fix tx/rx memory overflow netfilter: ebt_ip6: fix source and destination matching ...
2013-11-21Merge branch 'for-linus2' of ↵Linus Torvalds11-140/+296
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "In this patchset, we finally get an SELinux update, with Paul Moore taking over as maintainer of that code. Also a significant update for the Keys subsystem, as well as maintenance updates to Smack, IMA, TPM, and Apparmor" and since I wanted to know more about the updates to key handling, here's the explanation from David Howells on that: "Okay. There are a number of separate bits. I'll go over the big bits and the odd important other bit, most of the smaller bits are just fixes and cleanups. If you want the small bits accounting for, I can do that too. (1) Keyring capacity expansion. KEYS: Consolidate the concept of an 'index key' for key access KEYS: Introduce a search context structure KEYS: Search for auth-key by name rather than target key ID Add a generic associative array implementation. KEYS: Expand the capacity of a keyring Several of the patches are providing an expansion of the capacity of a keyring. Currently, the maximum size of a keyring payload is one page. Subtract a small header and then divide up into pointers, that only gives you ~500 pointers on an x86_64 box. However, since the NFS idmapper uses a keyring to store ID mapping data, that has proven to be insufficient to the cause. Whatever data structure I use to handle the keyring payload, it can only store pointers to keys, not the keys themselves because several keyrings may point to a single key. This precludes inserting, say, and rb_node struct into the key struct for this purpose. I could make an rbtree of records such that each record has an rb_node and a key pointer, but that would use four words of space per key stored in the keyring. It would, however, be able to use much existing code. I selected instead a non-rebalancing radix-tree type approach as that could have a better space-used/key-pointer ratio. I could have used the radix tree implementation that we already have and insert keys into it by their serial numbers, but that means any sort of search must iterate over the whole radix tree. Further, its nodes are a bit on the capacious side for what I want - especially given that key serial numbers are randomly allocated, thus leaving a lot of empty space in the tree. So what I have is an associative array that internally is a radix-tree with 16 pointers per node where the index key is constructed from the key type pointer and the key description. This means that an exact lookup by type+description is very fast as this tells us how to navigate directly to the target key. I made the data structure general in lib/assoc_array.c as far as it is concerned, its index key is just a sequence of bits that leads to a pointer. It's possible that someone else will be able to make use of it also. FS-Cache might, for example. (2) Mark keys as 'trusted' and keyrings as 'trusted only'. KEYS: verify a certificate is signed by a 'trusted' key KEYS: Make the system 'trusted' keyring viewable by userspace KEYS: Add a 'trusted' flag and a 'trusted only' flag KEYS: Separate the kernel signature checking keyring from module signing These patches allow keys carrying asymmetric public keys to be marked as being 'trusted' and allow keyrings to be marked as only permitting the addition or linkage of trusted keys. Keys loaded from hardware during kernel boot or compiled into the kernel during build are marked as being trusted automatically. New keys can be loaded at runtime with add_key(). They are checked against the system keyring contents and if their signatures can be validated with keys that are already marked trusted, then they are marked trusted also and can thus be added into the master keyring. Patches from Mimi Zohar make this usable with the IMA keyrings also. (3) Remove the date checks on the key used to validate a module signature. X.509: Remove certificate date checks It's not reasonable to reject a signature just because the key that it was generated with is no longer valid datewise - especially if the kernel hasn't yet managed to set the system clock when the first module is loaded - so just remove those checks. (4) Make it simpler to deal with additional X.509 being loaded into the kernel. KEYS: Load *.x509 files into kernel keyring KEYS: Have make canonicalise the paths of the X.509 certs better to deduplicate The builder of the kernel now just places files with the extension ".x509" into the kernel source or build trees and they're concatenated by the kernel build and stuffed into the appropriate section. (5) Add support for userspace kerberos to use keyrings. KEYS: Add per-user_namespace registers for persistent per-UID kerberos caches KEYS: Implement a big key type that can save to tmpfs Fedora went to, by default, storing kerberos tickets and tokens in tmpfs. We looked at storing it in keyrings instead as that confers certain advantages such as tickets being automatically deleted after a certain amount of time and the ability for the kernel to get at these tokens more easily. To make this work, two things were needed: (a) A way for the tickets to persist beyond the lifetime of all a user's sessions so that cron-driven processes can still use them. The problem is that a user's session keyrings are deleted when the session that spawned them logs out and the user's user keyring is deleted when the UID is deleted (typically when the last log out happens), so neither of these places is suitable. I've added a system keyring into which a 'persistent' keyring is created for each UID on request. Each time a user requests their persistent keyring, the expiry time on it is set anew. If the user doesn't ask for it for, say, three days, the keyring is automatically expired and garbage collected using the existing gc. All the kerberos tokens it held are then also gc'd. (b) A key type that can hold really big tickets (up to 1MB in size). The problem is that Active Directory can return huge tickets with lots of auxiliary data attached. We don't, however, want to eat up huge tracts of unswappable kernel space for this, so if the ticket is greater than a certain size, we create a swappable shmem file and dump the contents in there and just live with the fact we then have an inode and a dentry overhead. If the ticket is smaller than that, we slap it in a kmalloc()'d buffer" * 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (121 commits) KEYS: Fix keyring content gc scanner KEYS: Fix error handling in big_key instantiation KEYS: Fix UID check in keyctl_get_persistent() KEYS: The RSA public key algorithm needs to select MPILIB ima: define '_ima' as a builtin 'trusted' keyring ima: extend the measurement list to include the file signature kernel/system_certificate.S: use real contents instead of macro GLOBAL() KEYS: fix error return code in big_key_instantiate() KEYS: Fix keyring quota misaccounting on key replacement and unlink KEYS: Fix a race between negating a key and reading the error set KEYS: Make BIG_KEYS boolean apparmor: remove the "task" arg from may_change_ptraced_domain() apparmor: remove parent task info from audit logging apparmor: remove tsk field from the apparmor_audit_struct apparmor: fix capability to not use the current task, during reporting Smack: Ptrace access check mode ima: provide hash algo info in the xattr ima: enable support for larger default filedata hash algorithms ima: define kernel parameter 'ima_template=' to change configured default ima: add Kconfig default measurement list template ...
2013-11-20net: rework recvmsg handler msg_name and msg_namelen logicHannes Frederic Sowa2-3/+0
This patch now always passes msg->msg_namelen as 0. recvmsg handlers must set msg_namelen to the proper size <= sizeof(struct sockaddr_storage) to return msg_name to the user. This prevents numerous uninitialized memory leaks we had in the recvmsg handlers and makes it harder for new code to accidentally leak uninitialized memory. Optimize for the case recvfrom is called with NULL as address. We don't need to copy the address at all, so set it to NULL before invoking the recvmsg handler. We can do so, because all the recvmsg handlers must cope with the case a plain read() is called on them. read() also sets msg_name to NULL. Also document these changes in include/linux/net.h as suggested by David Miller. Changes since RFC: Set msg->msg_name = NULL if user specified a NULL in msg_name but had a non-null msg_namelen in verify_iovec/verify_compat_iovec. This doesn't affect sendto as it would bail out earlier while trying to copy-in the address. It also more naturally reflects the logic by the callers of verify_iovec. With this change in place I could remove " if (!uaddr || msg_sys->msg_namelen == 0) msg->msg_name = NULL ". This change does not alter the user visible error logic as we ignore msg_namelen as long as msg_name is NULL. Also remove two unnecessary curly brackets in ___sys_recvmsg and change comments to netdev style. Cc: David Miller <davem@davemloft.net> Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-20Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds6-169/+240
Pull slave-dmaengine changes from Vinod Koul: "This brings for slave dmaengine: - Change dma notification flag to DMA_COMPLETE from DMA_SUCCESS as dmaengine can only transfer and not verify validaty of dma transfers - Bunch of fixes across drivers: - cppi41 driver fixes from Daniel - 8 channel freescale dma engine support and updated bindings from Hongbo - msx-dma fixes and cleanup by Markus - DMAengine updates from Dan: - Bartlomiej and Dan finalized a rework of the dma address unmap implementation. - In the course of testing 1/ a collection of enhancements to dmatest fell out. Notably basic performance statistics, and fixed / enhanced test control through new module parameters 'run', 'wait', 'noverify', and 'verbose'. Thanks to Andriy and Linus [Walleij] for their review. - Testing the raid related corner cases of 1/ triggered bugs in the recently added 16-source operation support in the ioatdma driver. - Some minor fixes / cleanups to mv_xor and ioatdma" * 'next' of git://git.infradead.org/users/vkoul/slave-dma: (99 commits) dma: mv_xor: Fix mis-usage of mmio 'base' and 'high_base' registers dma: mv_xor: Remove unneeded NULL address check ioat: fix ioat3_irq_reinit ioat: kill msix_single_vector support raid6test: add new corner case for ioatdma driver ioatdma: clean up sed pool kmem_cache ioatdma: fix selection of 16 vs 8 source path ioatdma: fix sed pool selection ioatdma: Fix bug in selftest after removal of DMA_MEMSET. dmatest: verbose mode dmatest: convert to dmaengine_unmap_data dmatest: add a 'wait' parameter dmatest: add basic performance metrics dmatest: add support for skipping verification and random data setup dmatest: use pseudo random numbers dmatest: support xor-only, or pq-only channels in tests dmatest: restore ability to start test at module load and init dmatest: cleanup redundant "dmatest: " prefixes dmatest: replace stored results mechanism, with uniform messages Revert "dmatest: append verify result to results" ...
2013-11-16Merge commit 'dmaengine-3.13-v2' of ↵Vinod Koul5-167/+238
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine Pull dmaengine changes from Dan 1/ Bartlomiej and Dan finalized a rework of the dma address unmap implementation. 2/ In the course of testing 1/ a collection of enhancements to dmatest fell out. Notably basic performance statistics, and fixed / enhanced test control through new module parameters 'run', 'wait', 'noverify', and 'verbose'. Thanks to Andriy and Linus for their review. 3/ Testing the raid related corner cases of 1/ triggered bugs in the recently added 16-source operation support in the ioatdma driver. 4/ Some minor fixes / cleanups to mv_xor and ioatdma. Conflicts: drivers/dma/dmatest.c Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-11-15tree-wide: use reinit_completion instead of INIT_COMPLETIONWolfram Sang3-9/+9
Use this new function to make code more comprehensible, since we are reinitialzing the completion, not initializing. [akpm@linux-foundation.org: linux-next resyncs] Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13) Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-14raid6test: add new corner case for ioatdma driverDan Williams1-1/+9
With 24 disks and an ioatdma instance with 16 source support there is a corner case where the driver needs to be careful to account for the number of implied sources in the continuation case. Also bump the default case to test more than 16 sources now that it triggers different paths in offload drivers. Cc: Dave Jiang <dave.jiang@intel.com> Acked-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2013-11-14dmaengine: remove DMA unmap flagsBartlomiej Zolnierkiewicz4-13/+5
Remove no longer needed DMA unmap flags: - DMA_COMPL_SKIP_SRC_UNMAP - DMA_COMPL_SKIP_DEST_UNMAP - DMA_COMPL_SRC_UNMAP_SINGLE - DMA_COMPL_DEST_UNMAP_SINGLE Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Jon Mason <jon.mason@intel.com> Acked-by: Mark Brown <broonie@linaro.org> [djbw: clean up straggling skip unmap flags in ntb] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2013-11-14async_pq_val: convert to dmaengine_unmap_dataDan Williams1-23/+35
Use the generic unmap object to unmap dma buffers. Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2013-11-14async_pq: convert to dmaengine_unmap_dataDan Williams1-52/+65
Use the generic unmap object to unmap dma buffers. Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> [bzolnier: keep temporary dma_dest array in do_async_gen_syndrome()] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2013-11-14async_raid6_recov: convert to dmaengine_unmap_dataDan Williams1-20/+49
Use the generic unmap object to unmap dma buffers. Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> [bzolnier: keep temporary dma_dest array in async_mult()] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2013-11-14async_xor_val: convert to dmaengine_unmap_dataDan Williams1-13/+17
Use the generic unmap object to unmap dma buffers. Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> [bzolnier: minor cleanups] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2013-11-14async_xor: convert to dmaengine_unmap_dataDan Williams1-44/+51
Use the generic unmap object to unmap dma buffers. Later we can push this unmap object up to the raid layer and get rid of the 'scribble' parameter. Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> [bzolnier: minor cleanups] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2013-11-14async_memcpy: convert to dmaengine_unmap_dataDan Williams1-17/+23
Use the generic unmap object to unmap dma buffers. Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> [bzolnier: add missing unmap->len initialization] [bzolnier: fix whitespace damage] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> [djbw: add DMA_ENGINE=n support] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2013-11-01KEYS: The RSA public key algorithm needs to select MPILIBDavid Howells1-0/+1
The RSA public key algorithm needs to select MPILIB directly in Kconfig as the 'select' directive is not recursive and is thus MPILIB is not enabled by selecting MPILIB_EXTRA. Without this, the following errors can occur: crypto/built-in.o: In function `RSA_verify_signature': rsa.c:(.text+0x1d347): undefined reference to `mpi_get_nbits' rsa.c:(.text+0x1d354): undefined reference to `mpi_get_nbits' rsa.c:(.text+0x1d36e): undefined reference to `mpi_cmp_ui' rsa.c:(.text+0x1d382): undefined reference to `mpi_cmp' rsa.c:(.text+0x1d391): undefined reference to `mpi_alloc' rsa.c:(.text+0x1d3b0): undefined reference to `mpi_powm' rsa.c:(.text+0x1d3c3): undefined reference to `mpi_free' rsa.c:(.text+0x1d3d8): undefined reference to `mpi_get_buffer' rsa.c:(.text+0x1d4d4): undefined reference to `mpi_free' rsa.c:(.text+0x1d503): undefined reference to `mpi_get_nbits' Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Randy Dunlap <rdunlap@infradead.org>
2013-10-30crypto: skcipher - Use eseqiv even on UP machinesHerbert Xu1-20/+1
Previously we would use eseqiv on all async ciphers in all cases, and sync ciphers if we have more than one CPU. This meant that chainiv is only used in the case of sync ciphers on a UP machine. As chainiv may aid attackers by making the IV predictable, even though this risk itself is small, the above usage pattern causes it to further leak information about the host. This patch addresses these issues by using eseqiv even if we're on a UP machine. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: David S. Miller <davem@davemloft.net>
2013-10-25ima: provide support for arbitrary hash algorithmsDmitry Kasatkin2-3/+2
In preparation of supporting more hash algorithms with larger hash sizes needed for signature verification, this patch replaces the 20 byte sized digest, with a more flexible structure. The new structure includes the hash algorithm, digest size, and digest. Changelog: - recalculate filedata hash for the measurement list, if the signature hash digest size is greater than 20 bytes. - use generic HASH_ALGO_ - make ima_calc_file_hash static - scripts lindent and checkpatch fixes Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-10-25keys: change asymmetric keys to use common hash definitionsDmitry Kasatkin6-30/+20
This patch makes use of the newly defined common hash algorithm info, replacing, for example, PKEY_HASH with HASH_ALGO. Changelog: - Lindent fixes - Mimi CC: David Howells <dhowells@redhat.com> Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-10-25crypto: provide single place for hash algo informationDmitry Kasatkin3-0/+60
This patch provides a single place for information about hash algorithms, such as hash sizes and kernel driver names, which will be used by IMA and the public key code. Changelog: - Fix sparse and checkpatch warnings - Move hash algo enums to uapi for userspace signing functions. Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-10-25async_tx: use DMA_COMPLETE for dma completion statusVinod Koul1-2/+2
Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-16crypto: authencesn - Simplify key parsingMathias Krause1-22/+4
Use the common helper function crypto_authenc_extractkeys() for key parsing. Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Mathias Krause <mathias.krause@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-10-16crypto: authenc - Export key parsing helper functionMathias Krause1-18/+30
AEAD key parsing is duplicated to multiple places in the kernel. Add a common helper function to consolidate that functionality. Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Mathias Krause <mathias.krause@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-10-07crypto: crypto_memneq - add equality testing of memory regions w/o timing leaksJames Yonan7-13/+157
When comparing MAC hashes, AEAD authentication tags, or other hash values in the context of authentication or integrity checking, it is important not to leak timing information to a potential attacker, i.e. when communication happens over a network. Bytewise memory comparisons (such as memcmp) are usually optimized so that they return a nonzero value as soon as a mismatch is found. E.g, on x86_64/i5 for 512 bytes this can be ~50 cyc for a full mismatch and up to ~850 cyc for a full match (cold). This early-return behavior can leak timing information as a side channel, allowing an attacker to iteratively guess the correct result. This patch adds a new method crypto_memneq ("memory not equal to each other") to the crypto API that compares memory areas of the same length in roughly "constant time" (cache misses could change the timing, but since they don't reveal information about the content of the strings being compared, they are effectively benign). Iow, best and worst case behaviour take the same amount of time to complete (in contrast to memcmp). Note that crypto_memneq (unlike memcmp) can only be used to test for equality or inequality, NOT for lexicographical order. This, however, is not an issue for its use-cases within the crypto API. We tried to locate all of the places in the crypto API where memcmp was being used for authentication or integrity checking, and convert them over to crypto_memneq. crypto_memneq is declared noinline, placed in its own source file, and compiled with optimizations that might increase code size disabled ("Os") because a smart compiler (or LTO) might notice that the return value is always compared against zero/nonzero, and might then reintroduce the same early-return optimization that we are trying to avoid. Using #pragma or __attribute__ optimization annotations of the code for disabling optimization was avoided as it seems to be considered broken or unmaintained for long time in GCC [1]. Therefore, we work around that by specifying the compile flag for memneq.o directly in the Makefile. We found that this seems to be most appropriate. As we use ("Os"), this patch also provides a loop-free "fast-path" for frequently used 16 byte digests. Similarly to kernel library string functions, leave an option for future even further optimized architecture specific assembler implementations. This was a joint work of James Yonan and Daniel Borkmann. Also thanks for feedback from Florian Weimer on this and earlier proposals [2]. [1] http://gcc.gnu.org/ml/gcc/2012-07/msg00211.html [2] https://lkml.org/lkml/2013/2/10/131 Signed-off-by: James Yonan <james@openvpn.net> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Cc: Florian Weimer <fw@deneb.enyo.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-10-07crypto: ablk_helper - Replace memcpy with struct assignmentkbuild test robot1-2/+2
tree: git://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master head: 48e6dc1b2a1ad8186d48968d5018912bdacac744 commit: a62b01cd6cc1feb5e80d64d6937c291473ed82cb [20/24] crypto: create generic version of ablk_helper coccinelle warnings: (new ones prefixed by >>) >> crypto/ablk_helper.c:97:2-8: Replace memcpy with struct assignment >> crypto/ablk_helper.c:78:2-8: Replace memcpy with struct assignment Please consider folding the attached diff :-) Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-10-04ARM: add support for bit sliced AES using NEON instructionsArd Biesheuvel1-0/+16
Bit sliced AES gives around 45% speedup on Cortex-A15 for encryption and around 25% for decryption. This implementation of the AES algorithm does not rely on any lookup tables so it is believed to be invulnerable to cache timing attacks. This algorithm processes up to 8 blocks in parallel in constant time. This means that it is not usable by chaining modes that are strictly sequential in nature, such as CBC encryption. CBC decryption, however, can benefit from this implementation and runs about 25% faster. The other chaining modes implemented in this module, XTS and CTR, can execute fully in parallel in both directions. The core code has been adopted from the OpenSSL project (in collaboration with the original author, on cc). For ease of maintenance, this version is identical to the upstream OpenSSL code, i.e., all modifications that were required to make it suitable for inclusion into the kernel have been made upstream. The original can be found here: http://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=6f6a6130 Note to integrators: While this implementation is significantly faster than the existing table based ones (generic or ARM asm), especially in CTR mode, the effects on power efficiency are unclear as of yet. This code does fundamentally more work, by calculating values that the table based code obtains by a simple lookup; only by doing all of that work in a SIMD fashion, it manages to perform better. Cc: Andy Polyakov <appro@openssl.org> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2013-09-25X.509: add module description and licenseKonstantin Khlebnikov1-0/+3
This patch fixes lack of license, otherwise x509_key_parser.ko taints kernel. Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by: David Howells <dhowells@redhat.com>
2013-09-25KEYS: verify a certificate is signed by a 'trusted' keyMimi Zohar1-1/+80
Only public keys, with certificates signed by an existing 'trusted' key on the system trusted keyring, should be added to a trusted keyring. This patch adds support for verifying a certificate's signature. This is derived from David Howells pkcs7_request_asymmetric_key() patch. Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: David Howells <dhowells@redhat.com>
2013-09-25KEYS: Set the asymmetric-key type default search methodDavid Howells1-0/+1
The keyring expansion patches introduces a new search method by which key_search() attempts to walk directly to the key that has exactly the same description as the requested one. However, this causes inexact matching of asymmetric keys to fail. The solution to this is to select iterative rather than direct search as the default search type for asymmetric keys. As an example, the kernel might have a key like this: Magrathea: Glacier signing key: 6a2a0f82bad7e396665f465e4e3e1f9bd24b1226 and: keyctl search <keyring-ID> asymmetric id:d24b1226 should find the key, despite that not being its exact description. Signed-off-by: David Howells <dhowells@redhat.com>
2013-09-25X.509: Remove certificate date checksDavid Howells1-38/+0
Remove the certificate date checks that are performed when a certificate is parsed. There are two checks: a valid from and a valid to. The first check is causing a lot of problems with system clocks that don't keep good time and the second places an implicit expiry date upon the kernel when used for module signing, so do we really need them? Signed-off-by: David Howells <dhowells@redhat.com> cc: David Woodhouse <dwmw2@infradead.org> cc: Rusty Russell <rusty@rustcorp.com.au> cc: Josh Boyer <jwboyer@redhat.com> cc: Alexander Holler <holler@ahsoftware.de> cc: stable@vger.kernel.org
2013-09-25X.509: Handle certificates that lack an authorityKeyIdentifier fieldDavid Howells1-4/+5
Handle certificates that lack an authorityKeyIdentifier field by assuming they're self-signed and checking their signatures against themselves. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
2013-09-25X.509: Check the algorithm IDs obtained from parsing an X.509 certificateDavid Howells1-0/+11
Check that the algorithm IDs obtained from the ASN.1 parse by OID lookup corresponds to algorithms that are available to us. Reported-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Howells <dhowells@redhat.com>
2013-09-25X.509: Embed public_key_signature struct and create filler functionDavid Howells3-55/+74
Embed a public_key_signature struct in struct x509_certificate, eliminating now unnecessary fields, and split x509_check_signature() to create a filler function for it that attaches a digest of the signed data and an MPI that represents the signature data. x509_free_certificate() is then modified to deal with these. Whilst we're at it, export both x509_check_signature() and the new x509_get_sig_params(). Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
2013-09-25X.509: struct x509_certificate needs struct tm declaringDavid Howells1-0/+1
struct x509_certificate needs struct tm declaring by #inclusion of linux/time.h prior to its definition. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
2013-09-25KEYS: Split public_key_verify_signature() and make availableDavid Howells3-9/+39
Modify public_key_verify_signature() so that it now takes a public_key struct rather than a key struct and supply a wrapper that takes a key struct. The wrapper is then used by the asymmetric key subtype and the modified function is used by X.509 self-signature checking and can be used by other things also. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
2013-09-25KEYS: Store public key algo ID in public_key structDavid Howells3-5/+5
Store public key algo ID in public_key struct for reference purposes. This allows it to be removed from the x509_certificate struct and used to find a default in public_key_verify_signature(). Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>

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